Needle And Needle Guards For Az7000Sdr-8; Needle And Needle Guard(Rear); Needle And Needle Guard(Front) - Yamato AZ7000SDR-8 Instruction Manual

6.11 Needle and needle guards for AZ7000SDR-8 class
6.11.1 Needle and needle guard (rear)
This machine is equipped with a movable needle guard
(rear) ① that is interlocked with the lower looper.
The needle guard (rear) ① holds the needle from the rear
to protect the lower looper tip when the needle meets the
lower looper tip during the upward movement process from
the lowest point.
(1) Move the lower looper from the left to the right, and
align the needle with ridge line "a" of the needle guard
(rear).
(2) Loosen screw ②, and adjust so that the clearance be-
tween the needle and needle guard (rear) ① is reduced
to zero.
(3) In the case of the 2-needle machine, use the left nee-
dle as a reference and perform the same adjustment as
with the 1-needle machine.
Check that the clearance between the lower looper tip and
needle is 0 to 0.03 mm when the lower looper tip has meet
the respective centers of the left and right needles.
6.11.2 Needle and needle guard (front)
Loosen screw ④, and adjust so that the clearance between
the needle and needle guard (front) ③ is reduced to zero
when the needle it at its lowest point.
In the case of a 2-needle machine, the clearance between
the right needle and needle guard (front) ③ is 0.05 to 0.1
mm.
6.Adjustment of sewing machine
a
Fig. 6-36
Fig. 6-37
③
1-Needle
2-Needle
(left needle)
0 ㎜
Fig. 6-38
35
①
0
needles
0 - 0.03 ㎜
①
②
2-Needle
0.05 -
（right needle） 0.1 ㎜
④
AZ7000SDR-8, 7500SDR-8